Refactor REST server tests

Refactor REST server tests

Refactored the REST server tests so that each controller has
its own test class.
Also ensure things are shutdown by various tests.

Added comments.
Removed unneeded constant.
Updated license.

Modified code that restarts the REST server during tests.

Modified code to just change the activator's "alive" state to
false, leaving the REST server running.

Fixed comment.

Allocated server port.

Removed file that should not have been included.

Changed code to throw exceptions if activator methods are called while
in the wrong state.

Change-Id: I04a3a6654150797c23b3c86a6a39ecf8bb7f5a78
Issue-ID: POLICY-1542
Signed-off-by: Jim Hahn <jrh3@att.com>